期刊
OPTICAL MATERIALS
卷 66, 期 -, 页码 17-22出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2017.01.032
关键词
Silver nanowire; SiO2 spacer; Eu3+ complex; Fluorescent composite; Isotactic polypropylene
资金
- programme of Introducing Talents of discipline to the Universities (111 plan) [201640405]
- National One Thousand Foreign Expert Program [WQ20123700111]
- Natural Scientific Foundation of China [51273096, 51373081, 51473082, 51503112]
- State Key Project of China [2016YFE0110800]
In this contribution, we obtained the strong enhancement effect of silver nanowires(AgNWs) on fluorescent property of Eu3+-antenna complexes through the function of the surface plasmon resonance(SPR) effect. The key structural characteristics are: (1) AgNWs are covered by the Eu3+-ligand complex and spaced by SiO2 nano-layer between AgNWs and Eu3+-ligand complex (this structure is marked as AgNWs@SiO2@EuTP), and (2) AgNWs as nano-material with large ratio of length to diameter show their good dispersion and processability in isotactic polypropylene (iPP). We obtained the important data about the optimal spacer thickness of SiO2 is 15 nm that was not found in previous publications. The enhanced intensity of fluorescence of EuTP by AgNWs in AgNN/Vs@SiO2@EuTP is 9 times compared with that of EuTP. All of these outstanding properties and fine structures were characterized by TEM, FT-IR, XRD, and fluorescence spectrophotometer. On the other hand, the desired fluorescent iPP composite material was obtained through blending AgNWs@SiO2@EuTP into iPP host. Very importantly, the enhancement effect of AgNWs on EuTP fluorescence in AgNWs@SiO2@EuTP is refrained from the quenching caused by host polymer of iPP. (C) 2017 Elsevier B.V. All rights reserved.
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